四维混沌与分数傅里叶变换的图像加密方案

摘要:

将四维超混沌系统和标准加权类分数傅里叶变换理论相结合,提出了一种数字图像加密双重方案.对图像进行三基色分层标准加权类分数傅里叶变换,利用超四维混沌序列对变换结果进行置乱操作,将置乱后的3层数据融合得到加密图像仿真结果表明,加密后的图像灰度分布均衡,相邻像素的相关系数高度不相关,并且加密图像对秘钥高度敏感,具有较好抗攻击性、鲁棒性.

An image encryption algorithm based on hyper-cbaos system of 4-d and standard weighted fractional fourier transform was proposed. Firstly, do fractional fourier transform of the image about the three colors layered, then transform the results using 4-D hyper-chaos system, lastly the encrypted image was obtained after three layers of data fusion. The numerical simulation results demonstrate that the eneryption algorithm is against common attacks, the correlation coefficients of adjacent pixels is higher irrelevance, has larger key space and sensitive to keys with good security.

作者:

苏婷 董胜伟 吕志伟

机构地区:

安阳工学院数理学院

出处:

《betway官方app 学报：自然科学版》 CAS 北大核心 2015年第1期165-170,共6页

基金:

河南省青年骨干教师基金(2011GGJS-213)

关键词:

超混沌系统 标准加权类 分数傅里叶变换 图像加密 信息安全

hyper-chaos system standard weighted class fractional Fourier transform image encryption information security

分类号:

TP391.9 [自动化与计算机技术—计算机应用技术]

四维混沌与分数傅里叶变换的图像加密方案.pdf